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Wuxi Youda electronics |
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YOUDA INTEGRATED CIRCUIT
YD9088
FM RECEIVER CIRCUIT FOR BATTERY SUPPLY
—YD9088
DESCRIPTION
The YD9088 is a bipolar integrated circuit for use in mono portable and pocket radios. It is used when a
minimum of peripheral components (of small dimensions and low costs) is important. The circuit contains a
frequency-locked-loop (FLL) system with an intermediate Frequency (IF) of about 70kHz. Selectivity is achieved by
active RC-filters. De-tuning related to the IF and too weak input signals is suppressed by the mute circuit.
FEATURES
*Equipped with all stages of a mono receiver form antenna to audio output
*Mute circuit
*Search tuning with a single varicap diode
*Mechanical tuning with integrating AFC
*AM application supported
*Power supply polarity protection
*Power supply voltage down to 1.8V
WuXi YouDa Electronics Co., Ltd
Add: No.5 Xijin Road, National Hi-Tech Industrial Development Zone, Wuxi Jiangsu China
Tel: 86-510-85205117 86-510-85205106 Fax: 86-510-85205110
Website: www.e-youda.com
SHENZHEN OFFICE Tel: 86-755-83740369 Fax: 86-755-83741418
Ver 5.0
1 of 4
2006-7-10
DataSheet4 U .com
www.DataSheet4U.com
YOUDA INTEGRATED CIRCUIT
BLOCK DIAGRAM
YD9088
678
11 2.2kΩ 2.2kΩ +1
V1 MIXER
12
9 10
6kΩ
5kΩ
Vp
13
IF
LIMTER
∫
15
5.4kΩ
ALLPASS
FILTER
3
×
DEMODULATOR
6KΩ
5
VCO
4
V2
14
V2
×&∫
+
16 SEARCH
TUNING
R
S
+
V3
AF
MUTE
1
LOOP FILTER
AF
-1 V2
2
ABSOLUTE MAXIMUM RATINGS (Tamb=25℃)
PARAMETER
Supply voltage
Operating temperature
Storage temperature
SYMBOL
Vcc
Topr
Tstg
VALUE
5
-10~+70
-55~+150
UNIT
V
℃
℃
WuXi YouDa Electronics Co., Ltd
DataSheet4 U .com
2 of 4
Website: www.e-youda.com
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